Slab-charger.



0. KENDALL.

SLAB CHARGER.

APPLICATION FILED MAYIZfHHG.

a wins-sum I'- 9 v r r .20 o Q a 17 E 18 l 4 1 1": I,

i -H i WITNESSES J mvzm'on WQZJJQJQ J 3 MM? M 2% A wfiz 3 a D. KENDALL.

SLAB CHARGER.- APPLICATION mgr) MAY 12. 1916.

1,259,023. Patented Mar.12, 191s.

3 SHEETS-SHEET 2- 'Ill 1 1| I inlll wall/110111117111,

D.KENDALL SLAB CHARGER.

v APPLICATION FILE!) IAYIZLI-BIE. Q 1,259,023. Patented Mar. 12, 1918.

3 SHEETS-SHEET 3.

I wrrm-ISSE v Z M v ML UNITED STATES OFFICE.

- DAVID KENZDALL, OIHALLIANGE OHIO, ASSIGwNQLR,v .I.O .THE -ALLIANG.E.MAG'HIHE .COM-

:PANY, 'OFA-LLIANCE, OHIO, A CORPORATION 030310.

SMBT H R B- ZfanUwhom it may concern:

prv'ement in SlabChergefs, bf which. the

' follbiving is a; full, clenij, and ex'ntgdes'eription, referenceheinghad to the accompnnyf i terpos ing between thedrlving gear for the'ing draw ngs; 'ferming part .c 'f this 'speeifif. ne f yp 'h.r r" il, ienqil d n with my invention.

111 111 cf Fig; 2;-

Fig. 4k is a detailed sectional view the "r ijg 6: .1 i a ectp an ew pP0 "rings, and

'f tion" ofihe sfc ipn 'l b nning.

in driving mechanism for r0t'at1ng theb01- 1 1 1 .01 s pp t fo ccba eingl hi m 'jc'rahes (jthefj si rhil'gri devi'c'e's and is deto' tprev idesin eflicient idet ice'gf this t r ic can'f'belfi ledily assemb land iwhich h p r s a s' rran vt when then dtb' xf cel'nr'nn' is Ti S ewed;flit, i i l entl int f he i' i w tion of sujjjp rtfhouid ace rela se.

' a 21 1 1 11 iew 9 th lin 1 'ai 'clfvicebf this chaifa ct erlwliich isso K i l i "(2111021014 m ny?q m mwe ltf fi nelllswe teiiahii fiife eiletwith t Batented, Men, 12,11,918.

nn i et m #11 4 M9 4 6- Ser b; w

art that inplaces Where charging cranes of 'chn 'acter are nsed incenne'cti'cnwith furnaces, 'supp rtingQ columns for bull'dlng nd'crgmestructures arefreqn'ently se'placed that they nre liable to hestri-iclf'by the load 'snpportihgf'zirm when 'chzirgingf'and when thisha pens a Wreck occurs.

the colnm'n" and the lead "being charged thereby .act to hold the disksin frictional contact with each other s0 that the greater the lead thegreater the fi'ict'iencn said disks.

' The recise nzitul'e 'df my invention Will "be best u nderstqod'by'i'e'fe'rencetb the acv 5 i fi i ii il iii .ilb lfling fm This inventionrelzites tu en imprcyenient the Spirittfiid'gaqge. of my 1 nifent'1on,ajs defined in'the appended claims;

In the drawings, the? relie'rence char ec'ter '2 des'igmteswcranetrunway sii'ppoited by c'o liiiiins 3. ecent to a'fnrriiice Kl- Which istdbe chai g'ed with slabs. Mo'wizibly mount- 'eolen nieflruiiwayn isa 'qmn bridgee', and "6 issii trolley which isarranged t6 mdvelbngitndiiially', oi nthe bridge 6i transversel jiwithfelation to the "hiiilding. 'Me'l'lnted 0n the biidgej 5 is fmo-torf?which is gezti'ed to met drmounted on the tmlley 5nd arranged to movethe trqlle'y, along the bridge 'lhy'im'eatn's Of gearing 10 eone'ctemdaneor mofeofthe'snppoiting' Wh'eels fof'the trolley. vConnectedt0 the frame workbjf the trolley 6'is an a'nnularbearing 11, and..iotata'bly mounted inj.this"l" earing' is an'upwardly attending stem 12;hii 'inghlc0l1in n'j13'sus' 'teih'e'd therefrorni" 14" is the f'r ani'efeif the "ehafging apparatus which is hi1 tinged" 136 be 12 below thecollar 21 and which is arranged to form a bearing for a gear .member 23having teeth 24 on its periphery. This gear member 23 is provided withan annular recess and seated within this recess are a plurality offriction disks 2,5 and 26. The

friction disks 25 and 26 are placed in alternate relation, the disks 25being keyed to the gear wheel 24: by means of keys 27, while the disks26 are keyed to a flanged collar 28 by means of keys 29. This flangedcollar surrounds the two-part collar 21 and is held in position on saidcollar by means ofa two part ring 30 which is seated in an annularrecess in the collar 21. The gear member 23 is supported on rollers 31interposed between it and the top of the bearing 11, there being acertain amount of playbetween the flanged collar 28- and the gear memberso that the entire load supported bv thestem 12 is sustain'ed by thegear member 23 through the intcrpositioned disk members 25 and 26.

Each-pf the friction rings 25 and 26 as Well as the lower face ofthefianged collar 28 and the upper face of the gear member 23 areprovided with friction disks, such as indicated at 32 in Figs. 3, 4 and5, of any Well known character.

The collar 28 and the gear member are merely provided with recesses forreceiving the friction disks, while the friction rings are. providedwiththrough openings for the reccptionfof said disks, which disks are arranged to frict'ionallyv engage the surfaces.

of members on opposite sides of the disks. 33 a pinion meshing with thegear teeth 24 on the gear member 23, which pinion is connected to ashaft 34:, which. is journaled in suitable journals mounted on-thetrolley.

The upper end of this shaft 34L is provided with a beveled gear 35 whichis arranged to be driven by a beveled gear driven by means of a motor 36through suitable reducing gears.

The operation of the device is as follows: The charging apparatus isfirst lowered .by means of its motor to bring the charging arm intoposition over the slab to bechargedinto the furnace and thepiece isgripped thereby in the usual manner, the charging apparatus is thenraised and the crane moved to. aposition in front of the furnace.

The trolley is then moved in a lateral direction to move the arm 18 andthe billet supported. thereby into the furnace. The column,together'with the entirepcharging'apparatus, may 'then be rotated bymeans of the gearing heretofore described in order to lace thebillet'inthe right position to be owered on to the hearth of the furnace, the

of the load, as the greater the load on the arm, the greater thefriction of the disks.

In the specific apparatus shown and described, I have shown what isknown to the art as the overhead charging apparatus for charging slabsinto furnaces, but it will readily be understood by those familiar withthe art that the device is equally applicable to charging devices foropen hearth furnaces and various other types of furnaces and also thatit canbe used in connection with floor chargers, locomotive cranes andsimilar devices which are provided with a load SUPPOItlIlg arm arrangedto be rotated about an axis. a i

The advantages of my invention result from the provision: of frictionaldevices between'a'load to be rotated and the rotating mechanismtherefor, which is so arranged that the load is supported by thefriction ;through interposition ofthe friction driving members to varythe friction in proportion to theload; substantially as described. 2.Acharging crane,comprisinga column rotatable about a vertical axis,charging apparatus supported thereby, a bearing for supporting saidcolumn, a driving gear totatable about a vertical axis for rotating thecolumn supported on the column bearing, means on the driving gear forsupporting said column, said means including friction members connectedto the gear and the column which support the weight of the columnwhereby the friction between the driving gear and the column is variedin proportion tot-he loadcarried by the charging apparatus substantiallyas described.

3. A charging crane comprising a bridge, a trolley movable thereon, abearing supported by the trolley, a gear wheel rotatably mounted on saidbearing, a plurality of friction disks mounted on said gear Wheel, acolumn for supporting a charging apparatus rotatably mounted in saidbearing and supported on said friction disks, means for securingalternate friction disks to the column, and means for securing alternatefriction disks to the gear Wheel, the arrangement being such that thecolumn is rotated by means of the gear Wheel through the medium of thefriction disks; substantially as described 4. A charging cranecomprising a bridge, a trolley movable thereon, a bearing supported bythe trolley, a gear Wheel rotatably mounted on said bearing,anti-friction rollers interposed between said bearing and gear Wheel, aplurality of friction disks mounted on said gear Wheel, a column forsupporting a charging apparatus rotatably mounted in said bearing andsupported on said friction disks, means for securing alternate frictiondisks to the column, and means for securing alternate friction disks tothe gear Wheel, the arrangement being such that the column is rotated bymeans of the gear spindle of the column and supported on the upperfriction dislgmeans for connecting some of the friction disks to thecolumn spindle to rotate therewith, and means for connecting theremainder of said friction disks to the gear Wheel; substantially asdescribed.

In testimony whereof, I have hereunto set my hand.

DAVID KENDALL.

Witnesses:

0. RYAN, A. W. MORRIS. I

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washingtom D. 0.

